package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.*;
import java.awt.*;
import java.nio.charset.StandardCharsets;
import java.sql.Time;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 前端代码md5加密，然后再进行比对
        password=DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
    /**
     * 新增员工
     * @param employeeDTO
     */
    public void save(EmployeeDTO employeeDTO){
        Employee employee =new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        employee.setStatus(StatusConstant.ENABLE);

        employeeDTO.getPhone();
        //设置默认密码

        //电话号为默认密码
        //employee.setPassword(DigestUtils.md5DigestAsHex(employeeDTO.getPhone().getBytes()));

        //employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());


        //Long CurrentID = BaseContext.getCurrentId();
        //employee.setCreateUser(CurrentID);
        //employee.setUpdateUser(CurrentID);

        employeeMapper.insert(employee);
    }
    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){
        //select * from emplyee limit 0,10;
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee>page= employeeMapper.pageQuery(employeePageQueryDTO);

        long total=page.getTotal();
        List<Employee> records = page.getResult();

        return new PageResult(total,records);
    }
    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id){
        //Employee employee=new Employee();
        //employee.setId(id);
        //employee.setStatus(status);

        Employee employee=Employee.builder().id(id).status(status).build();

        employeeMapper.update(employee);

    }
    /**
     * 编辑员工信息
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO){
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        Long CurrentID = BaseContext.getCurrentId();

        //employee.setUpdateUser(CurrentID);
        //employee.setUpdateTime(LocalDateTime.now());

        employeeMapper.update(employee);
    }
    /**
     * 查询员工信息
     * @param id
     */
    public Employee getById(Long id){
        Employee employee=employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }
}
